Hex shaft tool



FIG. 1 is a perspective view showing a hex shaft tool according to my new design;

FIG. 2 is a second perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a front view thereof, the back view is a mirror image of the front view; and,

FIG. 5 is a right side view thereof, the left side view is a mirror image of the right side view.

Any features of the new design shown in broken lines are shown for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a hex shaft tool, as shown and described. 